Home / 5,285.55-7,927.72-1,390.26

Finding the Fourth Proportional to 5,285.55, 7,927.72 and 1,390.26

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Solution

The fourth proportional to 5,285.55, 7,927.72 and 1,390.26 is: 2,085.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.55 : 7,927.72 = 1,390.26 : x
  2. Step 2: Convert to fraction form
    5,285.55/7,927.72 = 1,390.26/x
  3. Step 3: Cross multiply
    5,285.55x = 7,927.72 × 1,390.26
  4. Step 4: Simplify right side
    5,285.55x = 11,021,626.08
  5. Step 5: Solve for x
    x = 11,021,626.08/5,285.55
  6. Step 6: Final answer
    x = 2,085.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.